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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "stdafx.h"
#include "queen/music.h"
#include "queen/queen.h"
#include "queen/resource.h"
#include "sound/mididrv.h"
#include "sound/midiparser.h"
namespace Queen {
Music::Music(MidiDriver *driver, QueenEngine *vm) : _isPlaying(false), _loop(false), _driver(driver) {
_midi = MidiParser::createParser_SMF();
_midi->setMidiDriver(_driver);
int ret = _driver->open();
if (ret)
warning("MIDI Player init failed: \"%s\"", _driver->getErrorName(ret));
_midi->setTimerRate(_driver->getBaseTempo());
_driver->setTimerCallback(this, myTimerProc);
if (vm->resource()->isDemo()) {
_musicData = vm->resource()->loadFile("AQ8.RL", 0, NULL);
_musicDataSize = vm->resource()->fileSize("AQ8.RL");
} else {
_musicData = vm->resource()->loadFile("AQ.RL", 0, NULL);
_musicDataSize = vm->resource()->fileSize("AQ.RL");
}
_numSongs = READ_LE_UINT16(_musicData);
}
Music::~Music() {
_driver->setTimerCallback(NULL, NULL);
_midi->unloadMusic();
_driver->close();
delete _midi;
delete[] _musicData;
}
void Music::playSong(uint16 songNum) {
if (_loop)
_midi->property(MidiParser::mpAutoLoop, 1);
else
_midi->property(MidiParser::mpAutoLoop, 0);
_isPlaying = true;
_midi->loadMusic(_musicData + songOffset(songNum), songLength(songNum));
_midi->setTrack(0);
}
void Music::stopSong() {
_isPlaying = false;
_midi->unloadMusic();
}
void Music::myTimerProc(void *refCon) {
Music *music = (Music *)refCon;
if (music->_isPlaying)
music->_midi->onTimer();
}
uint32 Music::songOffset(uint16 songNum) {
uint16 offsLo = READ_LE_UINT16(_musicData + (songNum * 4) + 2);
uint16 offsHi = READ_LE_UINT16(_musicData + (songNum * 4) + 4);
return (offsHi << 4) | offsLo;
}
uint32 Music::songLength(uint16 songNum) {
if (songNum < _numSongs)
return (songOffset(songNum + 1) - songOffset(songNum));
return (_musicDataSize - songOffset(songNum));
}
} // End of namespace Queen
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